<!doctype html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8" />
    <style type="text/css">
      .fade {
        height: 200px;
        width: 400px;
        background-image: radial-gradient(white, blue);
      }
    </style>
  </head>
  <body>
    <div class="fade"></div>
  </body>
</html>
